CISL Visitor Program (CVP) Brown Bag Seminar - "A Workflow for the Visualization and Analysis of Petascale Numerical Cloud Model Data"

12/13/2018 - 12:00pm

"A Workflow for the Visualization and Analysis of Petascale Numerical Cloud Model Data"

Leigh Orf
University of Wisconsin - Madison

As supercomputing technologies edges toward the exascale (enabling a million trillion floating point operations per second), significant challenges arise in both executing numerical models and managing and organizing the data they create. In this presentation, I will discuss how I created an I/O driver for the CM1 cloud model (developed at NCAR) that enables the saving of fully resolved 3D simulation data at extremely high temporal frequency. This driver and associated post-processing software, dubbed LOFS, will be described, as well as visualization examples of simulation data created on the Blue Waters supercomputer, utilizing NCAR's Vapor software. The use (and implications) of lossy floating point compression will be discussed, as it is necessary in order to achieve our goals of saving fully resolved cloud model data as frequently as every model time step, enabling extremely accurate Lagrangian parcel analysis from saved model data.


Leigh Orf is an Associate Scientist at the Cooperative Institute for Meteorological Satellite Studies at the University of Wisconsin. Leigh received his PhD (involving the simulation of microbursts) from UW-Madison in 1997 and has served as a faculty at the University of North Carolina-Asheville (2000-2003) and Central Michigan University (2003-2015). In 2015 Leigh became a Scientist (what might be called a research professor at many institutions) at CIMSS where he continues to conduct research involving the simulation, analysis, and visualization of extremely high resolution thunderstorm simulations.

Thursday, December 13, 2018
12:00 p.m. - 1:00 p.m.
Mesa Lab, Damon Room
Bring your lunch!